FindGLEW module fails to define variables if config is presented
Reason:
find_package(GLEW CONFIG QUIET)
if(GLEW_FOUND)
find_package_handle_standard_args(GLEW DEFAULT_MSG GLEW_CONFIG)
return()
endif()
The return is a bit too early since the variables that FindGLEW promises are not getting set by the config.
Related VCPKG PR with fix (currently in CI): https://github.com/microsoft/vcpkg/pull/7967